| 1) H3PO4 activation | CAK-P preparation parameters | Yield (%) Y1 | IN (mg·g−1) Y2 | ||||
| Nun order | X1 (mol·L−1) | X2 (˚C) | X3 (min) | Exp. Val. a | Pred. Val. b | Exp. Val. a | Pred. Val. b |
| 1 | 1 (−1) | 400 (−1) | 120 (+1) | 40.99 | 40.52 | 301.95 | 264.46 |
| 2 | 3 (0) | 400 (−1) | 75 (0) | 43.96 | 45.07 | 446.25 | 415.06 |
| 3 | 5 (+1) | 550 (0) | 75 (0) | 43.34 | 42.80 | 570.55 | 550.79 |
| 4 | 3 (0) | 700 (+1) | 75 (0) | 36.43 | 35.84 | 457.22 | 491.45 |
| 5 | 1 (−1) | 700 (+1) | 120 (+1) | 33.74 | 34.56 | 361.95 | 365.85 |
| 6 | 1 (−1) | 550 (0) | 75 (0) | 40.67 | 41.74 | 371.47 | 394.29 |
| 7 | 3 (0) | 550 (0) | 75 (0) | 41.47 | 40.98 | 438.15 | 436.15 |
| 8 | 3 (0) | 550 (0) | 75 (0) | 41.33 | 40.98 | 438.15 | 436.15 |
| 9 | 5 (+1) | 700 (+1) | 120 (+1) | 38.43 | 38.77 | 655.81 | 612.59 |
| 10 | 1 (−1) | 700 (+1) | 30 (−1) | 38.16 | 37.22 | 655.81 | 624.12 |
| 11 | 3 (0) | 550 (0) | 75 (0) | 41.21 | 40.98 | 438.30 | 436.15 |
| 12 | 5 (+1) | 700 (+1) | 30 (−1) | 36.06 | 36.40 | 486.25 | 522.97 |
| 13 | 5 (+1) | 400 (−1) | 120 (+1) | 42.66 | 43.46 | 647.70 | 678.61 |
| 14 | 1 (−1) | 400 (−1) | 30 (−1) | 51.45 | 50.97 | 369.00 | 405.33 |
| 15 | 5 (+1) | 400 (−1) | 30 (−1) | 49.84 | 48.88 | 476.25 | 471.58 |
| 16 | 3 (0) | 550 (0) | 120 (+1) | 40.06 | 38.56 | 381.01 | 426.87 |
| 17 | 3 (0) | 550 (0) | 30 (−1) | 40.56 | 42.59 | 495.30 | 452.49 |
| 2) H2SO4 activation | CAK-S preparation parameters | Yield (%) Y3 | IN (mg·g−1) Y4 | ||||
| Nun order | X1 (mol.L−1) | X2 (˚C) | X3 (min) | Exp. Val. a | Pred. Val. b | Exp.Val. a | Pred. Val. b |
| 1 | 1 (−) | 400 (−) | 120 (+) | 40.75 | 40.20 | 590.55 | 651.31 |
| 2 | 3 (0) | 400 (−) | 75 (0) | 39.21 | 39.73 | 438.15 | 561.91 |
| 3 | 5 (+) | 550 (0) | 75 (0) | 38.65 | 38.36 | 609.60 | 632.69 |
| 4 | 3 (0) | 700 (+) | 75 (0) | 35.28 | 35.54 | 762.00 | 758.61 |
| 5 | 1 (−) | 700 (+) | 120 (+) | 36.44 | 36.18 | 781.05 | 760.38 |
| 6 | 1 (−) | 550 (0) | 75 (0) | 37.88 | 39.93 | 678.65 | 675.93 |
| 7 | 3 (0) | 550 (0) | 75 (0) | 38.32 | 37.77 | 685.80 | 676.18 |
| 8 | 3 (0) | 550 (0) | 75 (0) | 38.15 | 37.77 | 666.75 | 676.18 |
| 9 | 5 (+) | 700 (+) | 120 (+) | 34.08 | 33.93 | 781.05 | 772.15 |
| 10 | 1 (−) | 700 (+) | 30 (−) | 39.73 | 39.53 | 685.80 | 699.62 |
| 11 | 3 (0) | 550 (0) | 75 (0) | 38.41 | 37.77 | 676.75 | 676.18 |
| 12 | 5 (+) | 700 (+) | 30 (−) | 37.32 | 37.67 | 704.85 | 713.99 |
| 13 | 5 (+) | 400 (−) | 120 (+) | 40.90 | 40.91 | 514.35 | 550.44 |
| 14 | 1 (−) | 400 (−) | 30 (−) | 40.97 | 40.92 | 419.11 | 527.92 |
| 15 | 5 (+) | 400 (−) | 30 (−) | 41.95 | 42.02 | 419.10 | 429.67 |
| 16 | 3 (0) | 550 (0) | 120 (+) | 36.13 | 37.07 | 678.65 | 721.37 |
| 17 | 3 (0) | 550 (0) | 30 (−) | 39.47 | 39.30 | 742.95 | 630.60 |